[libvirt] [PATCH] util: ignore SIGPIPE when writing to stderr/stdout

libvirtd's stderr/stdout redirected to journald by default, so if the journald has stopped, libvirtd and libvirtd's child process will receive SIGPIPE signal when writing logs to stderr/stdout. journald stopped reasons: 1. manual command "systemctl stop systemd-journald.service" 2. oom killer kill it. ... Signed-off-by: Wang Yechao <wang.yechao255(a)zte.com.cn&gt; --- src/util/virlog.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/util/virlog.c b/src/util/virlog.c index 4c76fbc..127e121 100644 --- a/src/util/virlog.c +++ b/src/util/virlog.c @@ -39,6 +39,7 @@ # include <sys/un.h> #endif #include <fnmatch.h> +#include <signal.h> #include "virerror.h" #include "virlog.h" @@ -732,6 +733,9 @@ virLogOutputToFd(virLogSourcePtr source ATTRIBUTE_UNUSED, if (fd < 0) return; + if (fd == STDERR_FILENO || fd == STDOUT_FILENO) + signal(SIGPIPE, SIG_IGN); + if (virAsprintfQuiet(&msg, "%s: %s", timestamp, str) < 0) return; @@ -740,6 +744,10 @@ virLogOutputToFd(virLogSourcePtr source ATTRIBUTE_UNUSED, if (flags & VIR_LOG_STACK_TRACE) virLogStackTraceToFd(fd); + + if (fd == STDERR_FILENO || fd == STDOUT_FILENO) + signal(SIGPIPE, SIG_DFL); + } -- 1.8.3.1